Our inserts are flat and 4.25 by 5.5” in size. They come single-sided but you can add a back side for $.25 each. Color and content changes can often be accommodated. Please reach out with any specific requests. Once you place your order, a designer will lay out your insert with your custom content and email you a proof to review. We are happy to make any changes you’d like to see and when you say “approved!”, we’ll begin production and ship out your items. Would you like to create these response cards yourself? Save money by purchasing the digital file and printing as many as you like on your home computer or at a print shop such a Kinkos or Office Max. The digital file is not a template. Our designer will still create your custom file for you, and provide any revisions you’d like before sending you a high-resolution printable PDF. If you have any questions, we’re always happy to help!